Göttingen 2025 – wissenschaftliches Programm

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MP: Fachverband Theoretische und Mathematische Grundlagen der Physik

MP 7: Quantum Field Theory I and Conformal Field Theory

MP 7.5: Hauptvortrag

Mittwoch, 2. April 2025, 17:45–18:15, ZHG001

A BPS Road to Holography: Decoupling Limits and Non-Lorentzian Geometries — •Niels Obers — Niels Bohr Institute, Copenhagen, Denmark

I explore decoupling limits that lead to matrix theories on D-branes, focusing on their BPS nature and the emergence of non-Lorentzian target space geometries. In these limits, D-branes experience instantaneous gravitational forces, and when applied to curved geometries, it is shown that a single decoupling limit leads to the AdS/CFT correspondence. By applying two such limits, we generate new holographic examples, including those with non-Lorentzian bulk geometries.

We also examine the relationship between matrix theories and non-relativistic string theory, and their uplift to M-theory. Finally, we demonstrate that reversing these decoupling limits corresponds to deformations of matrix theories, connecting them to the TTbar deformation in two dimensions. These deformations provide a new perspective on the near-horizon brane geometry and lead to TTbar-like flow equations for the Dp-brane DBI action.

Keywords: Matrix theory; Holography; String and M-theory; non-Lorentzian geometry